Home / 78,046.12-107,659.80-49,356.93

Finding the Fourth Proportional to 78,046.12, 107,659.80 and 49,356.93

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Solution

The fourth proportional to 78,046.12, 107,659.80 and 49,356.93 is: 68,084.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,046.12 : 107,659.80 = 49,356.93 : x
  2. Step 2: Convert to fraction form
    78,046.12/107,659.80 = 49,356.93/x
  3. Step 3: Cross multiply
    78,046.12x = 107,659.80 × 49,356.93
  4. Step 4: Simplify right side
    78,046.12x = 5,313,757,212.41
  5. Step 5: Solve for x
    x = 5,313,757,212.41/78,046.12
  6. Step 6: Final answer
    x = 68,084.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.